Meiji Seika Kaisha, Ltd.

Resonac Corporation

Shingo Sugimoto

Shigeo Seki

Shokichi Nakajima

Hiroki Yamada

Takashi Okubo

Yuichiro Asoma

Provided are a conductive polymer-containing dispersion for obtaining a solid electrolytic capacitor with low equivalent series resistance (ESR) while maintaining the capacitance, a method for producing same, and a solid electrolytic capacitor having low ESR while maintaining the capacitance. A conductive polymer-containing dispersion comprising a conjugated conductive polymer (A), a polyanion (B), an additive (C), and a dispersion medium (D), wherein a hydrogen bond term δHof the additive (C) as a Hansen solubility parameter is 5.0 to 20.0 MPa.

Conductive polymer-containing dispersion liquid, solid electrolytic capacitor and method for producing same

A compound having the formula: ##EQU1## and a 7-amihocephalosporanic acid derivative having the formula: ##SPC1## Are reacted in a homogeneous aqueous solution of the reactants to prepare a reaction of the formula: ##SPC2## In the formulas, R may be H or other defined substituents such as carboxyl group; R.sub.1 is H, an alkyl of 1-4 carbons or other defined substitents; R.sub.2 is H or phenyl or when taken together with R.sub.1 form a defined cyclicradical; R.sub.3 is H or other defined substituents and M is an alkali metal cation, ammonium cation or H.

Process for N-acylation of 7 amino cephem compounds

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Shingo Sugimoto